Improvement in sewing-machines



2 Sheets sheeti. J. FAN NING.

Improvement in Sewing-Machines.

No. 129,013. I Patentedluly16,1872.

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Improvement in Sewing-Machines.

No. 129,013. Patented Ju|y16,1872.

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WI IIIIIIIA @XuhWwW UNITED STATES JOHN FANNING, OF BROOKLYN, NEW YORK.

IMPROVEMENT IN SEWING-MACHINES.

Specification forming part of Letters Patent No. 129,013, dated July 16,1872.

Specification describing certain Improvements in Sewing-Machines, madeand invented by JOHN FANNING, of Brooklyn, in Kings county, in the Stateof New York.

My invention relates to that class of sewingmachines which makes theelastic lock-stitch, using both its upper and under thread directl yfrom the spools, and consists in so constructing and arranging thevarious parts of the machine as to give a positive side motion to thelooper which carries the under thread, and so arranging the connectionof said looper with a cam that it may be adjusted to work equally wellwith different-sized needles, my object being to produce a machine whichshall be positive in its action and likewise be durable and cheap.

The following is a full and exact description of my invention, referencebeing had to accompanying drawing and to the letters of reference markedthereon, corresponding letters representing corresponding parts, and inwhich- Figure l is a side elevation of my machine. A is the arm thatcommunicates motion to the needle-bar. B is the tension.- 0 is a linkwhich gives motion to the needle-arm by means of an eccentric on arevolving shaft, D. E is the looper taking its longitudinal motion fromthe needle-arm to which it is connected by a pin at F. G is a cam thatcommunicates lateral motion to the looper by means of the verticalpivoted arm H provided with the adjustable slide L and stud, I is thefeed-bar which gets its motion from an eccentric on the revolving shaftD.

Fig. 2 is an end view of my machine. Fig. 3 is a view of the grooved camG and adjustable arm H connected with the looper E. The stud of theslide enters the groove of the cam, and the rotation of the cam vibratesthe arm H. and moves laterally the looper which is carried in the upperend of the arm. By adjusting the slide L and stud on the arm the lateralmotion of the looper may be regulated.

Having thus described my invention, what I claim as my invention, anddesire to secure by Letters Patent, is

1. The vertical pivoted arm H, the reciproeating-looper E, and thegrooved cam G, all constructed, arranged, and operating as and for thepurpose set forth.

2. The arm H, its adjustable slide L and stud, combined with thereciprocating looper and the grooved earn, as set forth.

3. The revolving shaft D provided with an eccentric, a grooved cam, andat its forward end with an eccentric pin, when combined with the arm H,the looper E, the link 0, curved arm A, and needle bar and feed, allbeing constructed, arranged, and operating as described.

JOHN FANNING. Witnesses G. SrAcKPoLE, T. 0. OoNNoLLY.

